Aprilaire 800 - Manual (Page 5)

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TABLE 1 – Display panel (continued)
Icon Function
Drain valve indicator.
Light
Solid green to indicate start of drain cycle .
Drain cycle occurs:
1) To maintain nominal steam output during normal
operation .
2) During end of season shut down. (End of season shut
down occurs after 72 hours of inactivity.)
3) If humidifier has operated for 168 hours without a drain
cycle .
4) When humidifier is turned off.
Flashes green (along with fill light) indicating drain and fill
valves are pulsing to dislodge mineral deposits.
Flashes green when humidifier is turned off indicating
canister is draining. When flashing stops, main power
disconnect can be turned off and front panel can be opened.
Indicates canister needs to be replaced or humidifier
requires other type of service.
Light
Flashes red when canister can no longer supply demand
and needs to be replaced because electrodes have been
corroded or coated with mineral deposits. Humidifier may
continue to generate steam but at a reduced capacity.
Flashes red if humidifier with new canister cannot generate
steam due to insufficient water conductivity after 96 hours of
drain/fill activity. Approximately 1/10 teaspoon of table salt
can be added to fill cup to increase conductivity of water.
Solid red if controller detects over-current between
electrodes. Causes may include electrodes coated with
mineral deposits, blocked drain, or defect in drain valve
circuit. See Troubleshooting Guide.
The Digital Humidifier Control offers two modes of operation, Automatic or
Manual. An explanation of both modes follows. (See
Figure 2 on page 10 for
Automatic Mode. See Figure 3 on page 11 for Manual Mode.)
When in the Automatic Mode, this system offers the following benefits:
•
you will receive the optimum amount of humidity so that your
home and its furnishings are protected from the damaging effects
of excess condensation or low humidity during the heating
season. The Control automatically adjusts your home’s humidity based
on the outdoor temperature, increasing the time maximum comfort is
maintained .
• Simple operation with few adjustments. In the Automatic Mode, the
Control eliminates the need to manually adjust the control when outdoor
temperature changes. It also eliminates the need to turn the dial setting to
“OFF” during the summer season.
OpERATING INSTRUCTIONS – DIGITAL HUMIDIFIER CONTROL
DIGITAL HUMIDIFIER CONTROL INDICATOR LIGHTS
Call Dealer for Service: The red light indicates that the humidifier is not
operating normally and that service is required.
Humidifier On: The green light indicates that the humidifier is operating
normally .
BLOwER ACTIVATION
Set the Blower Activation Switch to “ON” to allow the Humidifier Control
to activate the furnace fan for additional humidification. Refer to
TABLE 4 –
Operation Guide. This may be required if the humidifier is mounted on a
heat pump or a furnace with short run cycles.
When the Blower Activation switch is “ON”, the Humidifier Control will turn
on the HVAC blower when humidity is required. In the “OFF” position, the
humidifier will only operate if humidity is required and the HVAC system is
operating .
When the Blower Activation switch is “ON”, the Humidifier Control may
periodically turn the HVAC blower on to sample the humidity of the air.